Senior Developer – Kotlin

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Soluções eSales | Logística, Financeiro, Analytics e File Transfer

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 1995

💸 Finance

☁️ SaaS

Logistics • Finance • SaaS

Soluções eSales is a company that specializes in logistics, finance, analytics, and file transfer services. They offer solutions that enhance operational efficiency and data management for businesses, leveraging technology to support various financial and logistical operations.

📋 Description

• Develop and evolve Kotlin microservices with a focus on robustness, performance and scalability. • Implement end-to-end integrations with financial institutions' APIs — interpreting bank manuals and technical specifications and translating them into reliable solutions. • Model domain-driven solutions (DDD) and manage communication between services (REST and event-driven patterns). • Act as a partner to Product, providing technical perspective to refine requirements and anticipate gaps. • Ensure security, observability and reliability from the design stage; participate in code reviews and in production incident resolution.

🎯 Requirements

• 5+ years of JVM development experience, with solid, proven expertise in idiomatic Kotlin. • Experience with microservices architecture and inter-service communication. • Integration fundamentals: REST and SOAP APIs; deep HTTP knowledge (status codes, headers, idempotency, retries); authentication (OAuth2, mTLS, payload signing); digital certificates and queues/messaging. • Ability to interpret third-party documentation and specifications (APIs, banking manuals) and implement them autonomously. • Strong foundation in DDD, Clean Code and SOLID principles; experience with relational databases (PostgreSQL). • Strong analytical skills and clear technical communication for a remote team. • Experience applying AI to development (assistants, agents, analysis support) — we use AI heavily in our workflow and value candidates who have already integrated it into their routine. • Prior experience with financial, banking or payments systems. • Experience with Ktor, event-driven architecture, automated testing, CI/CD and cloud (Azure/AKS, Kubernetes); API documentation (OpenAPI).

🏖️ Benefits

• Totalpass for your physical and mental well-being. • Psychological support program. • Company-provided equipment. • Day OFF. • Referral bonus for recommending professionals.